The Charpy impact test, also known as the Charpy V-notch test, is a standardized high strain-rate test which determines the amount of energy absorbed by a material during fracture. notched specimens is not a test for brittle fracture but rather a test which. Download scientific diagram | Dependence of impact toughness KCV (a) and J I ( b) on test temperature: I, II -specimen types according to Figure 1. Charpy V-notch (CVN) impact testing is widely used to characterise the resistance of a. What is the conversion from Charpy U values to Charpy V values or vise versa ?. The dynamic fracture toughness test and Charpy impact test for cast steel in the.